Big Bone Lick State Historic Site has been named by the U.S. Secretary of the Interior as a National Natural Landmark.
The park is significant for its combination of salt springs and late Pleistocene bone beds. Ancient creatures like the mammoth, mastodon, ground sloth and bison once roamed through mineral springs and swamps.
The site is recognized as the birthplace of American vertebrate paleontology for its significant role in the development of scientific thought regarding extinction and the relationship of geology and paleontology the world over.
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